<template>
  <div class="app-container">
    <el-row :gutter="20">
      <el-col :span="showTree ? 5 : 0" :xs="24">
        <category-tree ref="tree" @tree-click="treeClick"/>
      </el-col>

      <el-col :span="showTree ? 19 : 24" :xs="24">
        <el-form :model="queryParams" ref="queryForm" size="small" :inline="true" v-show="showSearch"
                 label-width="68px"
        >
          <el-form-item label="关键字" prop="key">
            <el-input
              v-model="queryParams.key"
              placeholder="请输入名称或描述"
              clearable
              @keyup.enter.native="handleQuery"
            />
          </el-form-item>
          <el-form-item>
            <el-button type="primary" icon="el-icon-search" size="mini" @click="handleQuery">搜索</el-button>
            <el-button icon="el-icon-refresh" size="mini" @click="resetQuery">重置</el-button>
          </el-form-item>
        </el-form>

        <el-row :gutter="10" class="mb8">
          <el-col :span="1.5">
            <el-button
              type="primary"
              plain
              :icon="showTree ? 'el-icon-d-arrow-left' : 'el-icon-d-arrow-right'"
              size="mini"
              @click="showTree = !showTree"
            >
            </el-button>
          </el-col>
          <el-col :span="1.5">
            <el-button
              type="primary"
              plain
              icon="el-icon-plus"
              size="mini"
              @click="handleAdd"
            >新增
            </el-button>
          </el-col>
          <el-col :span="1.5">
            <el-button
              type="danger"
              plain
              icon="el-icon-delete"
              size="mini"
              @click="handleDelete"
              :disabled="multiple"
            >删除
            </el-button>
          </el-col>
          <right-toolbar :showSearch.sync="showSearch" @queryTable="getList"></right-toolbar>
        </el-row>

        <el-table v-loading="loading" :data="list" @selection-change="handleSelectionChange">
          <el-table-column type="selection" width="55" align="center"/>
          <el-table-column label="编号" align="center" prop="attrGroupId"/>
          <el-table-column label="名称" align="center" prop="attrGroupName"/>
          <el-table-column
            prop="icon"
            label="图标"
            align="center"
          >
            <template #default="scope">
              <image-preview :src="scope.row.icon" :width="'40px'" :height="'40px'"/>
            </template>
          </el-table-column>
          <el-table-column label="所属分类" align="center" prop="catelogName"/>
          <el-table-column label="排序" align="center" prop="sort"/>
          <el-table-column label="描述" align="center" prop="descript"/>
          <el-table-column label="操作" align="center" class-name="small-padding fixed-width">
            <template slot-scope="scope">
              <el-button
                size="mini"
                type="text"
                icon="el-icon-edit"
                @click="handleUpdate(scope.row)"
              >修改
              </el-button>
              <el-button
                size="mini"
                type="text"
                icon="el-icon-delete"
                @click="handleDelete(scope.row)"
              >删除
              </el-button>
            </template>
          </el-table-column>
        </el-table>

        <pagination
          v-show="total>0"
          :total="total"
          :page.sync="queryParams.pageNum"
          :limit.sync="queryParams.pageSize"
          @pagination="getList"
        />
      </el-col>
    </el-row>

    <el-dialog :title="title" :visible.sync="open" width="700px" :close-on-click-modal="false" append-to-body>
      <el-form ref="form" :model="form" :rules="rules" label-width="100px">
        <el-form-item label="名称" prop="attrGroupName">
          <el-input v-model="form.attrGroupName" placeholder="请输入名称"/>
        </el-form-item>
        <el-form-item label="图标" prop="icon">
          <el-input v-model="form.icon" placeholder="请输入图标"/>
        </el-form-item>
        <el-form-item label="所属分类" prop="catelogFrom">
          <category-cascader ref="catSelect" @change="catSelectChange" style="width: 100%"/>
        </el-form-item>
        <el-form-item label="排序" prop="sort">
          <el-input-number v-model="form.sort" controls-position="right" :min="0"/>
        </el-form-item>
        <el-form-item label="描述" prop="descript">
          <el-input v-model="form.descript" type="textarea" placeholder="请输入内容"/>
        </el-form-item>
      </el-form>
      <div slot="footer" class="dialog-footer">
        <el-button type="primary" @click="submitForm">确 定</el-button>
        <el-button @click="cancel">取 消</el-button>
      </div>
    </el-dialog>
  </div>
</template>

<script>

export default {
  name: 'Group',
  data() {
    return {
      // 遮罩层
      loading: true,
      showTree: true,
      // 选中数组
      ids: [],
      // 非多个禁用
      multiple: true,
      // 显示搜索条件
      showSearch: true,
      // 总条数
      total: 0,
      // 表格数据
      list: [],
      // 弹出层标题
      title: '',
      // 是否显示弹出层
      open: false,
      // 查询参数
      queryParams: {
        pageNum: 1,
        pageSize: 10,
        key: undefined,
        catelogId: undefined
      },
      // 表单参数
      form: {},
      // 表单校验
      rules: {
        attrGroupName: [
          { required: true, message: '名称不能为空', trigger: 'blur' }
        ],
        catelogFrom: [
          { required: true, message: '所属分类不能为空', trigger: 'blur' }
        ],
        sort: [
          { required: true, message: '不能为空', trigger: 'blur' }
        ]
      },
      uri: '/product/attrGroup'
    }
  },
  created() {
    this.getList()
  },
  methods: {
    treeClick(data, node) {
      // 争对叶子节点有效
      if(node.isLeaf) {
        this.queryParams.catelogId = data.catId
        this.handleQuery()
      }
    },
    /** 查询列表 */
    getList() {
      this.loading = true
      this.$api.get(this.uri, this.queryParams).then(({ data }) => {
        this.list = data.records
        this.total = data.total
        this.loading = false
      })
    },
    // 取消按钮
    cancel() {
      this.open = false
      this.reset()
    },
    // 表单重置
    reset() {
      this.form = {
        attrGroupId: undefined,
        attrGroupName: undefined,
        icon: undefined,
        sort: 0,
        descript: undefined,
        catelogId: undefined,
        catelogFrom: []
      }
      this.$nextTick(() => {
        this.$refs.catSelect.reset()
      })
      this.resetForm('form')
    },
    /** 搜索按钮操作 */
    handleQuery() {
      this.queryParams.pageNum = 1
      this.getList()
    },
    /** 重置按钮操作 */
    resetQuery() {
      this.queryParams.catelogId = undefined
      this.queryParams.key = undefined
      this.$refs.tree.setCurrentKey(null)
      this.resetForm('queryForm')
      this.handleQuery()
    },
    // 多选框选中数据
    handleSelectionChange(selection) {
      this.ids = selection.map(item => item.attrGroupId)
      this.multiple = !selection.length
    },
    /** 新增按钮操作 */
    handleAdd() {
      this.open = true
      this.title = '添加'
      this.reset()
    },
    /** 修改按钮操作 */
    handleUpdate(row) {
      //this.reset()
      this.$api.get(this.uri + '/' + row.attrGroupId).then(response => {
        this.open = true
        this.title = '修改'
        this.form = response.data
        this.$nextTick(() => {
          this.$refs.catSelect.set(response.data.catelogFrom)
        })
      })
    },
    /** 提交按钮 */
    submitForm: function() {
      this.$refs['form'].validate(valid => {
        if (valid) {
          // 默认组件会传入选中的父子数组，只需要提交最后一项
          let catelogFrom = this.form.catelogFrom
          this.form.catelogId = catelogFrom[catelogFrom.length - 1]

          if (this.form.attrGroupId != undefined) {
            this.$api.post(this.uri, this.form).then(response => {
              this.$modal.msgSuccess('修改成功')
              this.open = false
              this.getList()
            })
          } else {
            this.$api.put(this.uri, this.form).then(response => {
              this.$modal.msgSuccess('新增成功')
              this.open = false
              this.getList()
            })
          }
        }
      })
    },
    /** 删除按钮操作 */
    handleDelete(row) {
      const idArr = row.attrGroupId || this.ids
      this.$modal.confirm('是否确认删除编号为"' + idArr + '"的数据项？').then(() => {
        return this.$api.delete(this.uri + '/' + idArr)
      }).then((resp) => {
        this.getList()
        this.$modal.msgSuccess('删除成功')
      })
    },
    catSelectChange(data) {
      this.form.catelogFrom = data
    }
  }
}
</script>

<style scoped>

</style>
